Just got ripped off on a car? Can I return it?**ten points**?

So, I paid about 4000 on an audi 1998. The man I bought it from bought it from another man. The car had been in an accident and this man assured me he would fix and get it running up and stuff. Well now the sale has been signed and stuff.It is in 'as in' condition. But when I drove I noticed that something was wrong. I took it to meinke and they told me the car's transmission is pretty much nonexistent and that supposedly I have three days to return it? And I was wondering if anyone know the lemon laws and such in arizona to confirm it? Also isn't false advertising? I was assured a fully functioning car and clearly this isn't one. Well thank you. (: